* {
  padding: 0px;
  margin: 0px;
}

.body {
  width: 100%;
}

.body .first {
  width: 100%;
  height: 100vh;
  background-image: url("../img/first.jpeg");
  background-position: center center;
  background-size: cover;
}

.body .first .top {
  background-color: #acacac;
  color: white;
  text-align: center;
  width: 50px;
  height: 50px;
  border-radius: 20px;
  position: fixed;
  top: 650px;
  left: 1500px;
  line-height: 50px;
  display: none;
}

.body .first .headers {
  opacity: 0.9;
  width: 100%;
  position: fixed;
  top: 0;
}

.body .first .headers .header {
  height: 65px;
  width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
}

.body .first .headers .header .logo {
  height: 65px;
  width: 34px;
}

.body .first .headers .header .logo img {
  margin-top: 15px;
  height: 34px;
  width: 34px;
  border-radius: 40%;
}

.body .first .headers .header nav {
  width: 845px;
  height: 65px;
}

.body .first .headers .header nav ul {
  width: 845px;
  height: 65px;
  display: flex;
  justify-content: space-between;
}

.body .first .headers .header nav ul li {
  list-style: none;
}

.body .first .headers .header nav ul li a {
  text-decoration: none;
  color: white;
  line-height: 65px;
  font-size: 14px;
  font-weight: 500;
}

.body .first .headers .header nav ul li a:hover {
  color: #ff6900;
}

.body .first .headers .header nav ul li .lifirst {
  color: #ff6900;
}

.body .first .headers .header .login {
  height: 65px;
}

.body .first .headers .header .login a {
  line-height: 65px;
  text-decoration: none;
  color: white;
  font-size: 14px;
  font-weight: 500;
}

.body .first .headers .header .login a:hover {
  color: #ff6900;
}

.body .first .headers .header .login span {
  line-height: 65px;
  color: white;
  margin: 0 20px;
}

.body .tow {
  height: 100vh;
}

.body .tow img {
  width: 100%;
}
